Hi, I've received feedback from forum members on this, but with just a description. I think my intentions were misunderstood so I drew up what I think might work. I'm looking to light up segments from left to right with the intensity of music from a line level car deck. Ultimately lighting them all up. I have changed the string of 3 leds to a string of 4 which will also have the 27ohm not 180. The strings make up letters of a brand of audio equipment. All input is welcome. Thanks